I have recently reinstalled vim and I noticed that the Spell checking is working very slowly. Whenever I do a z= on an incorrectly spelled word, Vim takes a good 4-5 seconds to show the spelling suggestions which is really really long. This used to happen almost instantly before.

It used to work fine before and I have no idea what happened. I checked this with bare vim too using vim -u NONE and it is still slow. So, I guess I can rule out this being an issue with my settings or with the plugins. And, Every thing else is behaving normally.

Any ideas on why this is happening and what can be do to speed this up? I am using the recent version of Vim for windows.

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    Are you sure you do not have several languages in set spelllang?, or maybe several methods in set spellsuggest? – grochmal Jul 3 '16 at 0:58
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    I have set spelllang=en and set spellsuggest=best. I had the same setup even before but that was never slow. – Durga Swaroop Jul 3 '16 at 0:59
  • Are you spell files /usr/share/vim/vimfiles/spell/* (not clue where that is on windows, sorry) on the same drive? Maybe on a network drive? – grochmal Jul 3 '16 at 1:36
  • @grochmal, I think $VIM_HOME/vim74/spell is that directory. And, it is a local drive. – Durga Swaroop Jul 3 '16 at 8:48
  • Wait, you say you used vim -u NONE, but that can still load plugins (from /etc/vim for example). vim -u NONE --noplugin is safer as a check. – grochmal Jul 3 '16 at 12:52

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